1.Research on evaluation of essential functional liver volume of solitary large hepatocellular carcinoma beforeγ-SABR
Wen SONG ; Shiqiang HAN ; Fengshan LI
China Medical Equipment 2015;(12):81-83
With the rapid development of medical technology, radiation therapy in the treatment of liver cancer occupies the important position. According to the biological characteristics of large liver cancer, the development of liver cancer radiotherapy at home and abroad and the technical features of stereotactic radiotherapy, it is concluded that the effect of radiation therapy of liver cancer can be comparable to those of surgery.γ-SABR is a kind of high accuracy of stereotactic radiotherapy. Before the treatment, usually do a rough evaluation according to the patient general condition, tumor size, and the liver function. The potential risk of radiation induced liver disease is very big. Therefore, the evaluation of essential functional liver volume of large liver cancer is particularly important before stereotactic radiotherapy. Draw lessons from the consensus of liver reserve function and the decision tree of liver function, the concept of essential functional liver volume and remaining functional liver volume is applied to theγ-SABR are being studied in clinical trials. This review is intend to outline the evaluation of essential functional liver volume of solitary large hepatocellular carcinoma beforeγ-SABR.
2.Role of AP-1 Activation in Regulation of Angiotensinogen Gene Expression Induced by AngⅡ
Aiying LI ; Jinkun WEN ; Mei HAN
Progress in Biochemistry and Biophysics 2006;0(08):-
Angiotensin Ⅱ(AngⅡ)can induce the expression of its precursor,angiotensinogen,in vascular smooth muscle cells(VSMC),which is related with increased activating protein-1(AP-1)binding to its cis-element located in the angiotensinogen gene promoter.In the present study,cycloheximide(CHX)was used as an inhibitor to interrupt c-Jun,the role of AP-1 in AngⅡ-induced its precursor gene activation was investigated by DNA-protein interaction and immunoblotting.The results showed that the level of c-Jun,the component of transcription factor AP-1,was significantly increased in the nucleus of VSMC after AngⅡ treatment.The majority of c-Jun was found in the nucleus but hardly detected in the cytoplasm by immunocytochemistry staining.Immunoprecipitation assays confirmed that AngⅡ could induce serine phosphorylation of c-Jun.EMSA results indicated that the level of phosphorylated of c-Jun had a positive correlation with AP-1 binding activity to cis-acting element of angiotensinogen gene and transcription activation of angiotensinogen.CHX inhibited AngⅡ-induced binding activity of AP-1 by reducing the phosphorylation of c-Jun,though it did not affect the expression of c-Jun.These findings suggest that the AP-1 phosphorylation induced by AngⅡ is one of the important mechanisms whereby AngⅡ regulates its precursor gene expression in feedback manner.It is found that CHX is an inhibitor to phosphorylation of c-Jun.
3.Research advances on structural modifications to resveratrol and their effect on biological activities
Li HAN ; Hong-peng LI ; Wen-ling LI
Acta Pharmaceutica Sinica 2020;55(11):2558-2569
Resveratrol possesses a wide range of biological activities, such as anti-cancer, anti-oxidation, induction of apoptosis, etc., but its poor drug properties, rapid metabolism, low target selectivity and bioavailability limit its application value. Studies have shown that modification of the structure of natural compounds can improve their pharmacological activities. To improve the bioavailability of resveratrol, many researchers have undertaken the synthesis and activity evaluation of resveratrol derivatives and analogues. They have modified the phenolic hydroxyl groups, double bonds and benzene ring of resveratrol so as to further understand the interactions among functional groups and its structure-activity relationship. In this paper, we review the chemical structures, synthetic methods and mechanisms of biological activity of resveratrol monomer derivatives as well as their related therapeutic applications, especially in the anticancer area over the last decade. This will provide some reference value for the further research and development of resveratrol-related drugs.
5.Biocompatibility of human umbilical cord mesenchymal stem cells and acellular muscle bioscaffolds
Tao ZHANG ; Yimin WEN ; Han LI ; Xiangke WEI
Chinese Journal of Tissue Engineering Research 2013;(25):4616-4622
10.3969/j.issn.2095-4344.2013.25.008
6.A comparison between traditional and modified composite remission scores and ultrasound imaging assessments in remission patients with rheumatoid arthritis
Qiang LI ; Ping ZHU ; Wen ZHAO ; Qing HAN
Chinese Journal of Rheumatology 2013;(5):293-297
Objective This study is aimed to assess the accuracy of clinical measurement of remission and investigate the association between clinical remission and the ultrasound imaging assessment of synovitis and infla'mation and to explore the value of ultrasound imaging in the evaluation of disease activity in the tight control of rheumatoid arthritis (RA).Methods RA patients with a disease activity score in 28 joints (DAS28-ESR) ≤2.6 for at least 3 months were stratified-using a standard and more stringent DAS28 and simplified disease activity index (SDAI) remission thresholds and the corresponding clinical and ultrasound imaging measures of synovitis were recorded.In addition,a retrospective analysis of disease activity in patients was carried out.Mann-Whitney U test,x2 test and multi-factor analysis of variance of repeated measurements were used for statistical analysis.Results A total of 48 cases were recruited.Thirty-seven cases (77%) met the ACR remission criteria,29 cases (60%) fulfilled the SDAI remission criteria,and 32 (67%) cases reached 2010 ACR/EULAR Boolean-based definition of remission criteria.There was no significant differences on imaging disease activity between SDAI remission patients and those who were not in remission (GS score,P=0.38; PD score,P=0.32).Seventy-nine percent patients in SDAI remission had GS and/or PD activity,but the difference was not statistically different when compared with patients who did not reach SDAI remission (P=0.29).Sustainable remission obtained in patients who also had achieved image remission could have longer remission time (P<0.01) Conclusion Using more stringent clinical remission criteria could help in reducing residual inflammatory activity of,but ultrasound PD activities may not be significantly reduced.Integrated clinical indicators such as physical examination and imaging tools such as ultrasound can provide more accurate assessment of disease activity and could be used to guide treatment to achieve trueremission.
7.Effect and risk factors for corneal endothelial cells after phacoemulsification in diabetic cataract patients
Mo-Han, LI ; Xiao-Lin, FU ; Wen-Fang, YANG
International Eye Science 2016;16(6):1048-1051
? AIM: To investigate the influence of phacoemulsification on corneal endothelial cells and its injury risk factors in diabetic cataract patients.?METHODS: From January 2013 to October 2015, 186 diabetic cataract patients ( 224 eyes ) as diabetes group and 190 patients with simple cataract ( 227 eyes ) as control group in our hospital were enrolled. All patients received phacoemulsification combined with intraocular lens implantation. Observation of corneal endothelial cell density, coefficient of variation and percentage of hexagonal cells preoperatively, 1d, 1wk, 1 and 3mo postoperatively were carried out, and multiple Logistic regression analysis for risk factors of corneal endothelial cell injury was taken.?RESULTS: There were no significant difference in the density of corneal endothelial cells, the coefficient of variation and the percentage of hexagonal cells between the two groups before surgery (P>0. 05). Each time point after operation corneal endothelial cell density and the percentage of hexagonal endothelial cells of diabetes group were significantly lower than the preoperative and those of control group ( P < 0. 05 ). Each time after operation endothelial cell coefficient of variation of diabetes group were significantly higher than the preoperative(P<0. 05). The endothelial cell coefficient of variation in diabetes group of the 1wk, 1 and 3mo after operation were significantly higher than those of the control group ( P<0. 05 ) . Corneal endothelial cell density and percentage of hexagonal cells of the control group at 1wk, 1 and 3mo after operation were significantly lower than the preoperative ( P<0. 05 ). The endothelial cell coefficient of variation of control group at 1wk, 1 and 3mo after operation were significantly higher than the preoperative(P<0. 05). Single factor analysis showed that age, shallow anterior chamber, long ultrasonic time, short eye axis, high energy ultrasonic, high cumulative released energy, a lot of perfusate and nuclear hardness ≥ grade Ⅲ associated with corneal endothelial cell injury ( P< 0. 05 ) . Multivariate Logistic regression analysis showed that age, long ultrasonic time, high ultrasonic energy, high cumulative released energy and nuclear hardness ≥ grade Ⅲ were the risk factors of corneal endothelial cell injury, the OR value and 95%CI were 1. 742 (1. 056-2. 682), 1. 958 (1. 227-3. 135), 2. 064(1. 274-3. 256), 2. 585(1. 493-3. 682), 2. 193 (1. 348-3. 316).?CONCLUSION: The injury of corneal endothelial cells after phacoemulsification in diabetic cataract patients is more serious than in patients with simple cataract. Age, long ultrasonic time, high ultrasonic energy, high cumulative released energy and nuclear hardness ≥grade Ⅲ are the risk factors of corneal endothelial cell injury.
8.Changes of Brain Natriuretic Peptide and Atrial Natriuretic Peptide in Serum of Children with Congestive Heart Failure
hong, CHANG ; xiu-zhen, HAN ; wen-li, WANG
Journal of Applied Clinical Pediatrics 2003;0(10):-
Objective To study the serum level of brain natriuretic peptide (BNP) and atrial natriuretic peptide (ANP) in patients with congestive heart failure (CHF) and assess the value of BNP. Methods The serum levels of BNP and ANP were determined by enzyme- linked immnoabsorbent assay.Cardial mdex(CI)and left ventricular election fraction(LVEF)in heart failure stage and period recouery of children with heart failare were determined by Doppler ultrasonography cardiogram. Results The BNP serum levels began to increase before heart failure (P
9.Metastasis correlation factors expression and NF-?B activation in colorectal carcinoma
Kun YU ; Mei HAN ; Jinkun WEN ; Binghui LI
Basic & Clinical Medicine 2006;0(04):-
Objective To investigate the relationship between NF-?B activation and the expression of metastasis correlation factors.Methods The expression of NF-?B,COX-2,ICAM-1,VCAM-1 and MMP9 in colorectal cancer and normal tissues was detected using Western blotting.Results(1)The expression level of NF-?B was higher in cancer tissues than that in normal tissues(P
10.Preventive and Therapeutic Effects of Xianling Gubao Capsules for Postmenopausal Osteoporosis
Wen WU ; Dongfeng LI ; Ximei ZHI ; Meiqing HAN
Journal of Guangzhou University of Traditional Chinese Medicine 2001;0(03):-
0.05); while in the 12th month, BMD markedly increased in group A and decreased in group B (P 0.05) but ?-CTX level increased after treatment (P